Year % of total population 1960 48.3237370404852 1961 48.2888611931951 1962 48.2407022624745 1963 48.1824462683337 1964 48.1284654305621 1965 48.0765460178032 1966 48.0245345582867 1967 47.9739366622564 1968 47.925398604794 1969 47.8769149936397 1970 47.8320073337036 1971 47.7925248593918 1972 47.7554460905969 1973 47.7219526986052 1974 47.6930659953879 1975 47.6686850106027 1976 47.6470604390323 1977 47.630231649871 1978 47.6184356622939 1979 47.6129362811301 1980 47.6155730065959 1981 47.6272685067457 1982 47.6457538540166 1983 47.6671644376613 1984 47.6892154881797 1985 47.7132384506159 1986 47.7406636468724 1987 47.7713189605195 1988 47.8048430113543 1989 47.8422811824134 1990 47.8955737569882 1991 47.9609307569005 1992 48.0254385065135 1993 48.0905771084291 1994 48.1487165713847 1995 48.2037244851536 1996 48.2561665804642 1997 48.3068033244036 1998 48.3488081156902 1999 48.2129284225643 2000 47.9170037141928 2001 47.6330909729889 2002 47.3612708546026 2003 47.1010530595137 2004 46.8541872118229 2005 46.6989686774015 2006 46.6786976799453 2007 46.7097213378833 2008 46.7359297819314 2009 46.7569566476225 2010 46.773992368706 2011 46.7878165956618 2012 46.8002967503068 2013 46.8123404249481 2014 46.8238911288954 2015 46.8317202000877 2016 46.8318570851245 2017 46.8551991017311 2018 46.9057704016292 2019 46.954430138939 2020 47.0027417262779 2021 47.0513938514648 2022 47.0985551884773 2023 47.1446133214126